Soil Sampling
For Sustainable Farming

Proper soil sampling is crucial in order to get the best results from a soil test, so it is important for you to follow the method for collecting samples described here.

Above all else, the most important thing is consistency! Soil is highly variable, So much so that if you took separate samples from different parts of your garden, they would probably each give you a completely different result. Instead, the aim is to get a "Representative Average" for the whole area by taking soil from a number of places and mixing it together.

But before you begin, make sure you have everything you need as it will be important to send the sample to the laboratory as quickly as possible. Using a suitable implement for is very important. You will also need a zip-lock plastic bag and a notebook.

Next, you should think about the area you want to have tested and make sure it is one that has had a fairly consistent history. For instance, an area used for pasture will give a rather different result from a vineyard, so you should avoid mixing soil from two such different areas – choose one or the other. (Of course if you want to work on both areas, you should get two samples tested, but make sure each is clearly labeled so they don't get mixed up).

The best time for soil sampling is at least 8 weeks before you need to be applying any fertilizer. This will allow plenty of time to deal with any questions you may have about the results and take care of any initial soil preparation and planting before applying fertilizer.

Collecting the Sample

When actually collecting the soil it is important to use the right implement and sample to the right depth. Remember, you are looking for results that give a reasonable picture of the soil within the root zone of the plants.

The best soil sampling tool to use is a stainless steel core sampler - a simple apple corer that you can get from your local Supermarket will suffice (although it can be a bit tricky to use on hard, dry soils). You could also try contacting your local Dept. of Agriculture or fertilizer supplier, as they may have implements you can borrow. Do not use tools made from other metals as they can produce distorted results for Trace Elements like Iron, Copper or Zinc, etc.

We also have a sample collection service if you need it.

Important: To complete all the required tests, the laboratory needs at least 500g of soil - please make sure you send enough soil and avoid delays caused by needing to repeat this process.

For more details on collecting soil samples, right-click this link and select "Save Target As" to download your Free Ebook.

Once you have collected the sample, it is important to send it off as quickly as possible since some important nutrient levels (especially Nitrogen and Sulfur) can change when soil is kept in a sealed container.

If you are wanting to test soil for Truffle production, you can find information on Truffle soil sampling here.

If you have any questions, or experience any problems, please use the form below to contact us.